In the equilibrium below, which species can be indentified as a base? Select all that apply. HS (aq) + H2O (l) ? H2S (aq) + OH' (aq) ? HoS HST OH

Question

Chemistry

Hayden Mcpherson

22 April, 08:02

In the equilibrium below, which species can be indentified as a base? Select all that apply. HS (aq) + H2O (l) ? H2S (aq) + OH' (aq) ? HoS HST OH

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Answers (1)

Know the Answer?

Julissa Forbes · Answer 1

HS⁻ and OH⁻

Explanation:

Per the Brønsted-Lowry theory, a base is a substance that can accept a proton from another substance

HS⁻ + H₂O ⇌ H₂S + OH⁻

base base

The reaction above is an equilibrium reaction.

In the forward reaction, HS⁻ is acting as a base, because it is "accepting" a proton from water to become H₂S.

In the reverse reaction, OH⁻ is acting as a base, because it is "accepting" a proton from H₂S to become H₂O.